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US ZIP Code Lookup
x402
US ZIP Code Lookup is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).
Returns city, state, and geographic coordinates for a given US ZIP code
Price / call$0.002
Success—
StatusUnknown
How this service works
Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.
Output
Returns a JSON object with the post code, country name, and a list of matching places each containing city/place name, state name, state abbreviation, latitude, and longitude.
Example use cases
Address validation for e-commerce checkout
“A customer just entered ZIP code 94103 — can you look up what city and state that is so I can auto-fill the address form?”
Delivery zone mapping by ZIP
“I need to know whether ZIP code 30301 is in Georgia so I can confirm it falls within our Southeast delivery region.”
Enriching user signup data with location
“A new user signed up with ZIP code 60614 — what city and state should I tag their profile with, and what are the coordinates?”
Technical details
Endpoint
GEThttps://anibalb.duckdns.org/x402/us-zipcode?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, no-account-required ZIP code to city/state/coordinates lookup paid per call in USDC on Base — ideal for AI agents that need location enrichment without managing API keys or subscriptions.
Side effects
- Invalid or non-existent ZIP code returns empty places array or error
- Non-US postal codes may not be supported by this endpoint
- Missing or malformed query parameter returns 400 error
- Payment failure or insufficient USDC balance returns 402 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"places": [
{
"state": "New York",
"latitude": "40.7484",
"longitude": "-73.9967",
"place name": "New York City",
"state abbreviation": "NY"
}
],
"country": "United States",
"post code": "10001"
}
}Tags
x402
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